* {
    margin: 0;
    padding: 0;
    text-decoration: none;
    list-style: none;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
}

.asidep {
    margin: 10px auto;
    width: 170px;
    height: 52px;
    border: 1px solid black;
    text-align: center;
    line-height: 52px;
    border-radius: 10px;
    cursor: pointer;
    background：#000;
}

.active {
    background: #aaa
}

.pindao {
    width: 100%;
    height: 100%;
    margin: 0 auto;
}

.xiuzi_nav,
.zi_nav,
.xiu_nav,
.left_nav {
    float: left;
    width: 15%;
    height: 530px;
    border: 1px solid #666;
    background:#ccc;
}

.xiu_nav,
.zi_nav,
.xiuzi_nav {
    display: none;
}

.show {
    float: left;
    width: 80%;
    height: 530px;
    border: 1px solid #666;
    padding: 30px 20px;
}

.show table {
    border: 1px solid #ccc;
    width: 550px;
    text-align: center;
}

.show table tr td {
    border: 1px solid #ccc;
}

.show table tbody {
    width: 100%;
    height: 100px;
}

iframe {
    width: 100%;
    height: 100%;
}